Whether your dog likes chasing chewing or fetching the chuckit whistler ball has something for everyone with this toy your dog will be even more excited at the prospect of having a ball thrown for it four strategically placed holes mean that the ball begins to whistle as soon as it launched into the air spiking your dogs interest and offering a challenge for it to chase after and catch the light blue chuckit whistler ball is made of high quality durable natural rubber making it parti